Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
thuc day » thuc dan, thuc vat
dang hai » dang khai, hang hai, dung hai
danh hai » lanh hai, manh hai, danh hau
lam thuc » lam thuoc, am thuc, nam thuc
hieu van » hieu va, thien van, lieu va
van lam » van nam
sach ly » sach y, sach lo, sach ty
tang ma » mang may, tang van
ly tang » le tang, ly hang, ly vang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly tang ma hoi. hieu van lam thuc day ((danh hai) or (dang hai)) cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly tang ma hoi. hieu van lam thuc day ((danh hai) OR (dang hai)) cau theo.
• Adding a wildcard symbol may retrieve word variants: su sach ly tang ma hoi. hieu van lam thuc day ((danh hai) or (dang hai)) cau theo*.